body {
  background: #f1f1f1;
}

body ul {
  list-style: none;
  display: flex;
  justify-content: start;
  padding: 0;
}

body ul li {
  width: 7rem;
  height: 2.8rem;
  margin: .2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: .4em;
  border: none;
  background: linear-gradient(#3498db, #2980b9);
  box-shadow: 0px 0.1rem 0.4rem rgba(0, 0, 0, 0.18);
}

body ul li a {
  text-decoration: none;
  text-align: center;
  color: white;
  font-size: 1.5em;
  border: none;
}
